Results 31 to 40 of about 5,901 (289)

Shapiro like steps reveals molecular nanomagnets’ spin dynamics

open access: yesAIP Advances, 2015
We present an accurate way to detect spin dynamics of a nutating molecular nanomagnet by inserting it in a tunnel Josephson junction and studying the current voltage (I-V) characteristic.
Babak Abdollahipour   +2 more
doaj   +1 more source

EVALUATION OF OUTER CORE VISCOSITY INFLUENCE ON THE EARTH FORCED NUTATION

open access: yesOdessa Astronomical Publications, 2007
On the base of the combined method, consisting of the Sasao, Okubo, Saito (1980) approach with the iteration procedure, allowing couple finite element method with the solution of the Laplace equation, it have evaluated the influence of outer core ...
M. V. Lubkov
doaj   +1 more source

Optimal Design of Single-stage Double-arc Spiral Bevel Gear Nutation Reducer

open access: yesJixie chuandong, 2020
According to the nutation motion principle,a new single-stage double circular-arc spiral bevel gear nutation reducer with simple structure and large transmission ratio is designed, and its transmission ratio calculation formula is obtained.
Zheng Lin   +3 more
doaj  

Design and Implementation of a Novel Passive Magnetically Levitated Nutation Blood Pump for the Ventricular-Assist Device

open access: yesIEEE Access, 2019
Considering the wear in mechanical bearings and the requirement for sensors or electrical power in active magnetic bearings, a novel nutation blood pump using a passive magnetic spherical bearing was developed in this paper.
Gang Chen   +4 more
doaj   +1 more source

The effect of the differential rotation of the earth inner core on the free core nutation

open access: yesGeodesy and Geodynamics, 2019
Seismic observations shows that the inner core rotates faster than the mantle and the rotation axis of the inner core may not align with the rotation axis of the mantle. Free core nutation reflects core's information.
Mian Zhang, Chengli Huang
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Active nutation controller [PDF]

open access: yes, 1980
An apparatus is described for controlling nutation motion in a spinning body, comprised of an angular accelerometer with its input axis perpendicular to the spin axis of the body, a flywheel with an axis of rotation perpendicular to the axis of the ...
Donohue, J. H., Hoffman, H. C.
core  

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

open access: yesAdvanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz   +4 more
wiley   +1 more source

Optimization of Torque Models for Radial Meshing Nutation Magnetic Gears Based on the Genetic Algorithm

open access: yesJixie chuandong, 2023
In the research of nutation magnetic drive, the torque density of gears is an important index to evaluate its performance. Thus, the analysis and optimization of the magnetic torque is particularly important.
Lou Meiyan, Yao Ligang, Guo Chenxian
doaj  

Evaluation of the first three years of Vgos 24 h sessions using a Kalman filter with C5++

open access: yesEarth, Planets and Space, 2023
We analyzed the first three years of VGOS 24 h sessions, and evaluated the performance in terms of Earth orientation parameters (EOP) and station positions.
Periklis-Konstantinos Diamantidis   +1 more
doaj   +1 more source

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